<span>They provided protection to all in
exchange for land and labor.</span> <span>About the
hierarchy at the manor where most of the people were serfs and received land in
exchange for farm labor and other jobs (like blacksmith, stone masons and
baker). </span>
The answer is most likely to be A).
Hope this helps:)
This document should help you understand more and explain!
http://file.scirp.org/pdf/CE20120200003_78369835.pdf
Hope this helped!
:)
